locutus/esm/php/array/next.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

import { getEntryAtCursor, getPointerState } from "../_helpers/_arrayPointers.js";
export function next(arr) {
    //      discuss at: https://locutus.io/php/next/
    // parity verified: PHP 8.3
    //     original by: Brett Zamir (https://brett-zamir.me)
    //          note 1: Uses global: locutus to store the array pointer
    //       example 1: var $transport = ['foot', 'bike', 'car', 'plane']
    //       example 1: next($transport)
    //       example 1: next($transport)
    //       returns 1: 'car'
    const state = getPointerState(arr, true);
    if (!state) {
        return false;
    }
    const nextCursor = state.cursor + 1;
    const entry = getEntryAtCursor(arr, nextCursor);
    if (!entry) {
        return false;
    }
    state.setCursor(nextCursor);
    return entry[1];
}